Manufacture of metal chests



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Patented Maly so, 1891s.

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F. J. KING.. MANUFAG-TURB OP METAL CHESTS.

188.4883118. Patented May 80,1898;

NiTnD STATES PATENT OFFICE.

FREDERICK J. KING, OF LONDON, ENGLAND.

MANUFACTURE OF METAL CHESTS.

SPECIFICATION forming' part of Letters Patent No. 498,718, dated May 30, 1893. Application iiled January 26, 1892. Serial No. 419,348. (No model.) Patented in England October 20, 1887, No.14,296.

To all whom t may concern:

Be it known that I, FREDERICK JOHN KING, merchant, a subject of the Queen of Great Britain and Ireland, and residing at 3 to 6 Oamomile Street, in the city of London, England, haveinvented certain Improvements in Apparatus for the Manufacture of Metal Chests or Cases, (for which I have obtained a patent in Great Britain, No. 14,296, dated October 20, 1887,) of which the following is a specification.

My invention has for its object to provide simple and convenient apparatus for fixing the ends of metal cases without riveting or soldering.

I will describe my invention with reference to the accompanying drawings in which-'- Figure 1 is a sectional elevation and Fig. 2 a plan of my improved apparatus for fixing the bottom and top of the case into the body thereof and the remaining figures illustrate the various stages in the manufacture of the case and details which will be hereinafter referred to.

The angles in the body of the case having been made by suitable machinery it is taken to the apparatus illustrated by Figs. l and 2 for fixing the bottom and top thereto. The plate to form the bottom of the case is made of sufficient size to extend say about a quarter of an inch outside the four sides of the tube or body of the case or chest which projecting edges are turned up to right angles by suitable means so as to form a shallow tray as shown in Fig. 3 which will snugly fit into the tube. In like manner the top is formed from a plate the same size as that from which the bottom is made, but provided with an opening therein as shown in Fig.4 which may be stamped out in a press or by other means.

In the body or tube is placed an anvil or surface to receive the pressure when securing the bottom and top of the case which anvil may consist of a block of Wood faced with metal but I prefer to form the said anvil of a number of pieces of metal or, wood and met-al fitted and held together `so as to be capable of being readily taken apart and removed from the case when finished. This anvil is illustrated in Fig. 5 and consists of top and bottom frames d d kept at the required distance apart by angle irons d2. Each frame d d consists of four bars connected together at their ends by hinges d4 and bolts d5. ,The hinges d4 extend beyond the edge of the bars forming the frame and enter the interior of the angle irons cl2 thereby retaining the said angle irons in their vertical position and giving rigidity to the anvil. The bottom plate formed as hereinbefore described is inserted in the tube so as to rest on the block oranvil with the rim or turned up edges upward the anvil being so far Within the tube that the upper edges of the four sides of the said tube will project above the turned up edges of the bottom plateV to the extent of say about a quarter of an inch as shown in Fig. 3f.

The apparatus Figs. 1 and 2 for fixing the bottom and top plates in the tube or body A consists of a nipping device containing two jaws G and I the jaw G being square or fiat at its forward edge or end gand carried by a lever G4 which is hinged at h to the frame H while the other jaw I is provided at its end t' with a projecting edge or with projections 2 which lie in front of and opposite to the front end or edge g of the jaw G between wh-ich projecting edge or projections and the square or fiat end g of the jaw G, the metal to be bent is placed and firmly held. The jawI is hinged at l2 to a lever I3 preferably of angular shape which is hinged to the jaw G at G2 so that by pressing together the two handles G3 and 1 3 of the respective jaws G and I a very powerful grip will be imparted to the article placed between the jaws.

The tube with the anvil therein and the bottom inserted, is placed in position in the frame H (as shown by dotted lines in Fig. 1) on a plate or turntable M and the projecting edge of one side of the tube or body is inserted between the jaws G IA of the nipping device as shown in Figs. 1 and 3a which device is then turned on its hinges h by means of Handles I3 G3 Fig. 6 so as t0 cause the projecting edge of the tube held between the jaws to be bent inward to an angle over the projecting rim of the bottom plate as shown in Fig. St. The

partially turned over edge is then released from the nipping jaws and then pressed by the jaw G into contact with the turned up edge or rim of the bottom plate; to do this the into the position shown in made to project above the frame.

jaw I is turned back on its hinge as shown in Fig. 7 and the jaw G is then turned on its hinge so as to cause the ilat or square end g thereof to press the partially turn-ed over edge of the tube forcibly against the turned up edge of the bottom plate the said edge being thereby inclosed within the turned over edge of the side of the tube or body of the case or chest as shown in Fig. 9a. The tube or partially formed case is then removed from the frame. H, by drawing out the turntable with the tube thereon, and then returned into the frame with another of the projecting edges in position to be turned over, and in like manner the other projecting edges are brought successively into position and acted on in the manner described. The projecting edges of the four sides of the tube being thus folded over the rim of the bottom plate; a rim consisting of threethicknesses of metal as shown in Fig. 9 is thus formed round the tube and the next operation is to Hatten this rim onto the bottom plate. For this purpose the tube and the turn-l table carrying it are raised so as to bring the surface of the bottom plate about level with the top edge h2 of the frame II the rim being The rim on Vone of the four sides of the tube is then nipped between the jaws of the nipping device and turned in at an angle toward the bottom as shown in Fig. 9b and afterward pressed against the bottom by means of the square end of the jaw Gas shown in Figs. 8 and 10, and the other portions of the rim being similarly acted upon the bottom is fixed in position without the use of rivets or solder. The elevation of the turntable with the partly formed chest thereon may be effected by inserting a plate of the required thickness between the turntable and the baseplate of the apparatus or by any other suitable means. The chest or case thus far made and still containing the anvil is removed from the frame and turned upside down to have the top fixed thereto which is effected in the same Way as that described for iixing the bottom the anvil being of such a length that the four sides of the body of the case will project about a quarter of an inch above the turned up edge of the top plate when the said plate is resting on the anvil. When the fixing of the top plate is completedv the case is removed from the apparatus and the anvil taken apart and removed from the interior. To remove the anvil it is simply necessary to withdraw the bolts d5 which connect together the parts of the upper and lower frames after which the parts may be easily separated and withdrawn through the opening in the top of the case.

I claim- 1. In an apparatus for the manufacture of metal cases, the combination with a support for the case, of a folding device consisting of a lever hinged to the support and provided with a jaw, another lever hinged to the first said lever, and a hinged jaw carried bythe second said lever, substantially as set forth.

2. In an apparatus for the manufacture of metal cases, the combination of a folding device, consisting of a jaw having a ilat edge, carried by a lever, an angular lever pivoted to the lever carrying said jaw, and another jaw provided at its end with a projection or projections which overlap or lie in front of, and opposite to, the front end or edge of the first said jaw, and which are adapted on the movements of the said angular lever to move toward and from the same, substantially as set forth. l.

3. In an apparatus for the manufacture of metal cases, the combination of the support for the case, a lever G4, pivoted thereto and provided with the folding jaw having a square or flat yend g, the lever Ispivoted to the lever G4, the jaw I pivoted to the lever I3, and the projections i2 carried by Vthe jaw I and lying opposite to and parallel with the edge of the jaw g, substantially as set forth.

4. In an apparatus for making metal cases, the combination of the support for thecase, the folding jaws adapted to turn or fold over the edges of the case, and the collapsible anvil or frame adapted to be inserted into the said case, substantially as set forth.`

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. y j

FREDK. J. KING. l/Vitnesses:

GEORGE Go'rTIs, PENRosE DURMAN,

Both of 3 Oamomile St., E. C. 

